Decarboxylative Benzylations of Alkynes and Ketones
摘要:
Benzyl esters of propiolic and beta-keto acids undergo catalytic decarboxylative coupling when treated with appropriate palladium catalysts. Such decarboxylative couplings allow the benzylation of alkynes without the use of strong bases and/or organometallics. This allows the synthesis of sensitive benzylic alkynes that are prone to undergo isomerizations under basic conditions. Additionally, decarboxylation facilitates the site-specific benzylation of diketones and ketoesters under mild, base-free conditions. Ultimately, the methodology described expands our ability to cross-couple medicinally relevant heterocycles.
Conia et al., Bulletin de la Societe Chimique de France, 1959, p. 1511,1512
作者:Conia et al.
DOI:——
日期:——
Conia,J.-M.; Gosselin,P., Bulletin de la Societe Chimique de France, 1961, p. 836 - 841
作者:Conia,J.-M.、Gosselin,P.
DOI:——
日期:——
Decarboxylative Benzylations of Alkynes and Ketones
作者:Robert R. P. Torregrosa、Yamuna Ariyarathna、Kalicharan Chattopadhyay、Jon A. Tunge
DOI:10.1021/ja1035557
日期:2010.7.14
Benzyl esters of propiolic and beta-keto acids undergo catalytic decarboxylative coupling when treated with appropriate palladium catalysts. Such decarboxylative couplings allow the benzylation of alkynes without the use of strong bases and/or organometallics. This allows the synthesis of sensitive benzylic alkynes that are prone to undergo isomerizations under basic conditions. Additionally, decarboxylation facilitates the site-specific benzylation of diketones and ketoesters under mild, base-free conditions. Ultimately, the methodology described expands our ability to cross-couple medicinally relevant heterocycles.